Continuity mistake: When the first Guadalajara brother is shot, and his body is on the floor, you can see the blood on the glass. Two seconds later, in a close-up shot, it is missing, only to reappear a few seconds later.
Other mistake: When the first Naranjo brother was shot, blood gets on the glass behind him, implying the bullet exited his head. But if it did, the bullet would have smashed the glass - it didn't.
